Upfitter Harness Extensions

Upfitter Extensions
Need more reach from your upfitter relay box? Our Upfitter Extensions use the same OEM-style connectors featured in our No-Crimp Solution, giving you clean, reliable plug-and-play access to each upfitter circuit — no cutting, no splicing required.

Each extension includes:
• 18 inches of wire with 12 inches of protective nylon sleeving
• Matching male/female connectors
• Heat shrink solder connectors for secure, weather-resistant splices

Available in both 6-wire and 7-wire versions to match your setup.

For a clean and complete install, pair with our Grounding Solution.

Compatible with 2020–present Super Duty trucks.
Proudly made in the USA.